I have a motherboard with UEFI (Gigabyte GA-B75M-D3H with latest UEFI). I installed Windows 10, then installed Ubuntu 17.04 with dual boot option.
Ubuntu would boot, but due to no overscan options working for my LCD TV, I went to boot Windows. Windows proceeded to try to repair itself, and failed; startup repair fixes nothing. I want to find out how to boot Windows without wiping the hard drive.